Threadless nut or collar.



H. DALTON. THREADLBSS NUT 0R COLLAR. APPLICATION FILED PEB.'7, 1914.

1, 1 1 4, 1 23. Patented Oct. 20, 1914.

WITNESSES: a

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HUBERT DALTON, or NEW YORK, N. Y.

THREADLESS NUT OR COLLAR.

Specification of Letters Patent.

Patented Oct. 20, 1914..

Application filed February 7, 1914. Serial No. 817,148.

more particularly aims to provide improved means for quickly detachableadjustment upon a cooperant support to the end that the said means whenso adjusted may act as a stop or retaining member in a variety ofsituations. e

The present invention is particularly valuable in providing aninstrumentality forassociation with a revoluble shaft, or with a fixedshaft upon either of which is suitably mounted a revoluble member as agear or pulley, to the end that when so associated said instrumentalitymay prevent a displacement of said revoluble member longitudinally ofits shaft.

A cardinal object of the invention is to provide an embodiment thereofwhich will be cheap and simple in construction, having few parts andthose few parts Simple and ments ofthe latter.

easily formed, and which will be convenient of mounting and demounting,and reliable, efficient and .safe in performance.

An important object of the invention is to disclose an embodiment whichwhen mounted upon said shaft or the like will not be keyed thereon, butwhich, on the other hand,

.even while performing its appointed duties with absolute positiveness,will not be carrid for revolution by said shaft and will remainimmovable during the turnin move- This is an en which has been aheretofore existing desideratum, on account of the fact that theretaining nuts or the like in the past employed in connection withhigh-speed machinery have carried projecting parts or conformations;these conformations, due to the simultaneous rotation of each such niitand its support, having constituted an always present source of dangertoany person in the vlcinity.

Otherobjects and aims of the invention,

' more or less broad than those stated above,

together with the advantages inherent, will be in part obvious and inpart specifically referred to in the course of the following descriptionof the elements, combinations, arrangements of parts, and'applicationsof principles constituting the invention.

Referring now to the accompanying drawing, which is to be taken as apart of this specification, and wherein-is shown a possible embodimentof this invention as at present preferred, Figure 1 is an end elevation,partially broken away, of said embodiment, looking toward the terminusof the shaft upon which the retaining member is mounted; Fig. 2 is aperspective 'view of the parts shown in full-lines in Fig. 1; and Fig. 3is a vertical sectional view, taken on the line 66 of Fig. 1.

Similar reference characters refer to similar parts throughout theseveral views of the drawing.

I will now describe with particularity the device of thedrawing,reserving it to the claims to define the scope of the invention, itbeing understood that these claims will be given due range ofequivalents.

Referring now particularly'to Figs. 1, 2 and 8, the reference numeral 8may representin the present instance a revoluble driving shaft, adaptedto have detachably adjusted thereon, for revolution therewith, asuitable pulley or the like. The main body of the shaft here merges intoa reduced integral endortion 9. End-portion 9 is provided exterlorlywith an annular groove 10.

' This end-portion preferably carries a spherical end-face 9'. A member18,-which may be termed a threadless nut, is adapted to be sleeved uponend-portion 9' as shown.

slots 19 the bottom walls of which if prolonged as indicated indot-and-dash lines in Fig. 1 would preferably converge. The slots 19 areso cut as to break into the bore of the nut 18, and consequently whennut 18 is properly positioned on end-portion 9 to afford a' plurality ofopenings communicatin with the interior of the groove 10. A lea spring20 generally U-shaped as shown, and

which carries a crimp or upstanding portion Nut' 18 carries exteriorly aplurality of straight 20 and whose legs 20 nut 18 upon the end-portion 9in a Well undental drag turning from the scope thereof,

derstandable manner. associated with said 2, at the proper time to mentof the crimp 20.

Having described this embodiment of the invention, the operation thereofmay now be understood. I

It will of course be appreciated that the present invention will be ofgreat value, for instance, when associated with a lathe or the like whenthe shaft 8 is adapted to carry one of an interchangeable plurality ofgears or pulleys; and the same remarks may as well apply toanyiother'embodiment of the invention. Assuming that a pulley or thelike is selected for tempora drive upon and by the sha ft-8,' andassumlng further that the nut 18 and its leaf-spring 20 is preliminarilyremoved from the end-portion 9 6f the shaft, the aforesaid pulley or thelike is suitably positioned upon the shaft and' thereupon the nut 18 isadjusted into its locked engagement with said sha'ft preferably by,first, advancing the nut longitudinally of the endportion 9 and towardthe main body of the shaft, and, next, by mounting the leaf-spring 20 asshown in Fig. 1. Upon a drive being imparted to the shaft 8, theaforesaid pulley, of course, being driven ,with it, the nut 18, whileefiective to prevent a longitudinal displacement of the pulley upon itsshaft, is not necessarily rotated with said shaft, since as shown thelegs 20 preferably in slight frictional contact with the bottom of theslot 10. Should an accibe imparted to said nut, however, the crimp 20will come into abutment with stop-pin 16 and prevent any furthermovement of the nut; thus preventing injury to any operator or operatorscoming into proximity to the turning parts.

t will thus be seen that therehas been provided an embodiment of thisinvention well adapted to attain the various ends, objects andadvantages set forth and apparent hereinabove; an embodiment which, moreover, possesses marked superiority in the matters of reliability,efliciency, simplicity and cheapness of construction, and safety.

Inasmuch as'many changes could be made in the above construction, andmany apparently widely different embodiments of my invention could bemade without departing it is intended that all matter contained in theabove description or shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense. It is also tobe under- ,stood that the language used in the following claimsisintended to cover all the generic and specific features of theinvention A stop-pin .16 may be nut 18 as shown in Fig. arrest furthermoveof leaf-spring 20 are,

and 0 herein described and all statements of the scope of the inventionwhich, as a matter of language, might be said to fall therebetween.

cla1m:,-

1..In .a device of the class described, a shaft having formed in thecylindrical surface thereof an annular groove, a cylindrical nutmountable upon said shaft to overlie said groove, said nut having apluralit of channels cut in its outer cylmdrical sur ace, one of saidchannels having a straight bottom and being so deep that it cuts throughand opens into the bore of the nut, !both of said channels beingnon-parallel and cut in a common plane normal to the axis of the bore ofthe nut, and a single resilient generally U-shaped bent-wire lockingmember so conformed that sertible in said channels so that by virtue ofthe resiliencyof said member and the nonparallelism of said channelssaid member when thus inserted in said channels is prevented fromaccidental'disengagement from the nut, the portion of said member whichlies in the bore-intersecting channel being adpated to enter the shaftsannular groove when the said bore-intersecting channel overlies anyportion of said annular groove, said locking member carrying a portionwhich projects from the outer cylindrical surface of the nut and whichis manipulable to displace from its normal engagement with said annulargroove the portion of said member which lies in the saidbore-intersecting channel so that said demounted from or shaft.

2. In a device of the class described, a shaft havin formed in thecylindrical surface thereo an annular groove, a cylindrical nutmountable upon said shaft to overlie said groove, said nut having aplurality of nut may be readily mounted upon said channels cut in itsouter cylindrical surface,

one of said channels having a straight bottom, and being so deep that itcuts through ens into the bore of the nut, both of said 0 annels beingnon-parallel and cut in a common plane normal to the axis of the bore ofthe nut, and a single resilient generally U-shaped bent-wire lockingmember so conformed that the legs of the U converge more and more asthey leave the bow of the U, said legs being readily insertible in saidchannels so that by virtue of the resiliency of said member andthenon-parallelism of the said channels said legs when thus inserted insaid channels are prevented from accidentah disengagement from the nut,the le which lies in the bore-intersecting channe being adapted to enterthe shafts annular groove when the said bore-intersecting channeloverlies any portion of said annular groove, the bow of said lockingmember carrying a portion which projects from the portions thereof arereadily inouter cylindrical surface of the nut and "In witness whereof Ihave hereunto signed which 1is manipulable to illisplaeie from 1its myname in the presence of two witnesses. norma engagement wit sai annu aroove the le which lies. inthe said bore- HUBERT DALTON 5 mtersectin cannel so that said nut may In the presence ofbe readil emounted from ormounted upon MARY H. LEWIS, said she t. ALDA L. MILLER.

